SY89853U Datasheet, PDF (1/13 Pages) Micrel Semiconductor – Precision Low-Power Dual 2:1 LVPECL MUX with Internal Termination

SY89853U
Precision Low-Power Dual 2:1 LVPECL MUX
with Internal Termination
General Description
The SY89853U features two, low jitter 2:1 differential
multiplexers with 100K LVPECL (800mV) compatible
outputs, capable of handling clocks up to 2.5GHz and
data streams up to 2.5Gbps.
The SY89853U differential inputs include Micrel’s
unique, 3-input termination architecture that allows
users to interface to any differential signal (AC- or DC-
Coupled) as small as 100mV without any level shifting
or termination resistors networks in the signal path. The
result is a clean, stub-free, low jitter interface solution.
The differential 800mV LVPECL outputs have fast
rise/fall times guaranteed to be less than 180ps.
The SY89853U operates from a 2.5V ±5% or a 3.3V
±10% supply, and is guaranteed over the full industrial
temperature range (–40°C to +85°C). For applications
that require higher performance, consider the
SY58026U. The SY89853U is part of Micrel's Precision
Edge^® product family.
All support documentation can be found on Micrel’s web
site at www.micrel.com.
Features
Precision Edge^®
• Dual 2:1 MUX, each channel selects from inputs
• Unique, patent-pending input isolation design
minimizes crosstalk
• Low power 210mW (V_CC = 2.5V)
• Guaranteed AC performance over temperature and
voltage:
- DC-to->2.5Gbps data rate throughput
- <360ps IN-to-Q t_pd
- <180ps t_r/t_f times
• Ultra-low jitter design:
- <1ps_RMS random jitter
- <10ps_PP deterministic jitter
- <10ps_PP total jitter (clock)
- <0.7ps_RMS crosstalk-induced jitter
• Unique, patent-pending 50Ω input termination and
VT pin accepts DC- and AC-coupled inputs (CML,
LVDS, PECL)
• 800mV LVPECL output swing
• Power supply 2.5V ±5% or 3.3V ±10%
• –40°C to +85°C temperature range
• Available in 32-pin (5mm x 5mm) MLF^® package
Applications
• Data communication systems
• All SONET OC-3 to OC-48 applications
• All Fibre Channel applications
• All GigE applications
Markets
• LAN/WAN communication
• Enterprise servers
• ATE
• Test and measurement
Precision Edge is a registered trademark of Micrel, Inc
MLF and MicroLeadFrame are registered trademarks of Amkor Technology.
Micrel Inc. • 2180 Fortune Drive • San Jose, CA 95131 • USA • tel [phone] • fax + 1 [phone] • http://www.micrel.com
February 2007
M9999-022007-B
[e-mail] or [phone]